How Sundar Pichai uses AI to run Google: "I have agents running internally for me... There are all these chat groups: pre-training, mid-training, post-training data, etc. It could easily take me an hour a day to catch up on what's happened in the last 24 hours, but now I have agents running that summarize and bring that information to me. I can still go deeper, and I do so often. Similarly, there are agents with telemetry into our compute usage, product areas, efficiency, and utilization, and they are giving me inputs and insights."